期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 119, 期 45, 页码 25401-25407出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpcc.5b07736
关键词
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资金
- European Union (European Social Fund, ESF)
- Greek national funds via the General Secretariat for Research & Technology, Ministry of Education and Religious Affairs, Greece [NSRF 2007-2013]
- European Research Infrastructure LASERLAB EUROPE [228334]
Multifunctional surfaces with reversible characteristics have gained great attention due to their various envisioned applications. We report on the development of surfaces exhibiting both photocatalytic activity and reversible wettability. Initially, irradiation of silicon wafers with femtosecond laser pulses produces a surface with dual-scale roughness in the micro- and nanoscale. Subsequently, the hierarchically roughened silicon surfaces are coated with ZnO following a simple sol gel process. The manufactured artificial surfaces exhibit reversible wettability from superhydrophilic (upon UV irradiation) to superhydrophobic (upon heating), while the specimens reveal high photocatalytic activity as illustrated by the decolorization of methylene blue utilized as a model dye. The surfaces exhibit reproducibility and stability over a number of cycles.
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